Bit Operations using Macros

Code

#include <stdio.h>
#include <stdint.h>

// Define bitwise macros here
#define set(r,n) r |=(1<<n);
#define clear(r,n) r &=~(1<<n);
#define togg(r,n) r ^=(1<<n);

uint8_t modify_register(uint8_t reg) {
    // Apply operations in order

    set(reg, 2);
    set(reg, 7);
    clear(reg, 3);
    togg(reg, 5);
    return reg;
}

int main() {
    uint8_t reg;
    scanf("%hhu", &reg);
    printf("%u", modify_register(reg));
    return 0;
}

Solving Approach